No Design View in a new standalone wpfApplication

Question

I wanted to create a new standalone WPF application and carried out the following steps: New Project->Visual C#->Windows->WPF application-> specified the name & location->OK A new standalone WPF application was created but There was no Design view. When I click the Designer, following error is displayed:- "There is no editor available for C:\Documents and Settings\username\My Documents\Visual Studio 2008\Projects\wpfApplication1\window1.xaml" Make sure the application for the file type(.xaml)is installed. what is the remedy?